If zero were an option, that would be my rating.

This mattress is awful, We absolutely hate the mattress, it smells awful like chemical and mildew. We haven’t been able to sleep through the night since we got it. We’ve put fans directly towards it to try and help air it out, but it stinks up our whole house. Our sinuses have been a mess since we took it out of the box. If the smell wasn’t enough to make you run for the hills, the feeling of sleeping on a plank of plywood sends it over the edge for us.